138817096 has 32 divisors (see below), whose sum is σ = 286202880. Its totient is φ = 62596800.

The previous prime is 138817079. The next prime is 138817109. The reversal of 138817096 is 690718831.

It is a super-2 number, since 2×138817096² = 38540372283746432, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4966 + ... + 17386.

It is an arithmetic number, because the mean of its divisors is an integer number (8943840).

Almost surely, 2^138817096 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138817096, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143101440).

138817096 is an abundant number, since it is smaller than the sum of its proper divisors (147385784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138817096 is a wasteful number, since it uses less digits than its factorization.

138817096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12565 (or 12561 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 138817096 is about 11782.0667117446. The cubic root of 138817096 is about 517.7828380673.

The spelling of 138817096 in words is "one hundred thirty-eight million, eight hundred seventeen thousand, ninety-six".